Solution: Append Characters to String to Make Subsequence
Explore how to determine the minimum number of characters that must be appended to a source string so that a target string becomes its subsequence. Learn to implement a greedy two-pointer technique to efficiently match characters in order, ensuring optimal appending by scanning the source once.
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Statement
You’re given two strings, source and target, made up of lowercase English letters. Your task is to determine the minimum number of characters that must be appended to the end of the source so that the target becomes a subsequence of the resulting string.
Note: A subsequence is formed by deleting zero or more characters from a string without changing the order of the remaining characters.
Constraints:
source.length,target.length...